US PATENT SUBCLASS 212 / 71
OVERHEAD

Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

71OVERHEAD {7}
72  DF  .~> Cable, ship coaling type
73  DF  .~> Shiftable track {2}
76  DF  .~> Cable {8}
328  DF  .~> Self-propelled trolley {2}
336  DF  .~> Nonmotor traverse {4}
343  DF  .~> Surface vehicle {2}
346  DF  .~> Trolley having wheels which contact different sides or planes of a beam

DEFINITION

Classification: 212/71

OVERHEAD:

(under the class definition) Miscellaneous traversing hoists comprising means for raising a load from overhead and traversing it, either in a straight or curved line.

(1) Note. In these instruments there is no means for shifting the load laterally in respect to the track or corresponding element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

223+, for hoists having a swinging movement about a fixed point.

312+, for hoists capable of moving the load in two directions by independent movements.

SEE OR SEARCH CLASS

104, Railways,

124, for elevated track details of general application. 242, Winding, Tensioning, or Guiding,

370+, particularly subclasses 390+ for a motor powered reeling device.